**Cold Case Cracked: Mother's Secret Grave Found After Decades**

A mother vanished, leaving her young daughter in despair. For years, her disappearance remained a mystery. Now, new information has led investigators to a hidden grave. This breakthrough is the focus of an all-new "48 Hours" report. Correspondent Peter Van Sant reveals the details of the long-cold case of Kimberly Langwell. The episode airs this Saturday, April 11, at 10/9c on CBS. It will also be available for streaming on Paramount+. Viewers should check local listings for possible delays.